Scarlett Johansson stepped out at at the UK premiere of “Captain America: The Winter Soldier” at the Westfield London on Thursday.

The 29-year-old is expecting her first child with fiancé (the couple announced their engagement in September), Romain Dauriac, TMZ reported — but managed to mask her growing stomach at the film’s premiere. Wearing a crimson-colored dress and leopard print Louboutins, it was business as usual for the actress who struck pose after pose in front of photographers and fans.

Scarlett Johansson on March 13Splash News

Becoming a mother might be her next role but in the meantime, Johansson (who voiced computer, Samantha, in Spike Jonze’s “Her”) has several peculiar-sounding films lined up.

In “Under the Skin,” she’ll play “a form of alien, landed or stranded among us, and acquiring human males not for sex or friendship but for the serial harvesting of their meat,” writes the New Yorker. She’ll also play “a drug mule who ingests some of her cargo and develops unusual superpowers” in “Lucy.”

On Thursday, March 13, Johansson’s changing shape was much more obvious when she stepped out in a lace Giorgio Armani Prive top and skirt at the “Captain America” premiere at the El Capitan Theatre in Hollywood.